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Molecular Au(I) complexes in the photosensitized photocatalytic CO2 reduction reaction

Published online by Cambridge University Press:  31 March 2020

Shakeyia Davis ,
Dinesh Nugegoda Open the ORCID record for Dinesh Nugegoda [Opens in a new window] ,
Joshua Tropp Open the ORCID record for Joshua Tropp [Opens in a new window] ,
Jason D. Azoulay  and
Jared H. Delcamp Open the ORCID record for Jared H. Delcamp [Opens in a new window]
Shakeyia Davis
Affiliation:
Department of Chemistry and Biochemistry, University of Mississippi, University, MS38677, USA
Dinesh Nugegoda
Affiliation:
Department of Chemistry and Biochemistry, University of Mississippi, University, MS38677, USA
Joshua Tropp
Affiliation:
School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS39406, USA
Jason D. Azoulay
Affiliation:
School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS39406, USA
Jared H. Delcamp*
Affiliation:
Department of Chemistry and Biochemistry, University of Mississippi, University, MS38677, USA
*
Address all correspondence to Jared H. Delcamp at [email protected]
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Abstract

Five Au complexes are evaluated for the reduction reaction of CO2 via cyclic voltammetry and in a photocatalytic system. Electrochemically, the complexes were all evaluated for pre-association with CO2 prior to electrochemical reduction and for thermodynamic favorability for CO2 reduction in photocatalytic systems. The complexes were evaluated in photocatalytic reactions using an Ir-based photosensitizer and a sacrificial electron donor for the conversion of CO2 to CO. Au-complex counterion effects on the photocatalytic reaction were analyzed by varying weakly coordinating counterions with significant performance changes noted. At low Au-complex concentrations, a high TON value of 700 was observed.

Type
Research Letters
Information
MRS Communications , Volume 10 , Issue 2 , June 2020 , pp. 252 - 258
Copyright
Copyright © Materials Research Society 2020

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